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High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol

文献类型：期刊论文

作者Zhu, Chong-Shu1,3; Qu, Yao1; Zhou, Yue1; Huang, Hong2; Liu, Hui-Kun1; Yang, Lu1; Wang, Qi-Yuan1; Hansen, Anthony D. A.4; Cao, Jun-Ji1,3
刊名GONDWANA RESEARCH
出版日期2021-02-01
卷号90页码:159-164
关键词Light absorption Black carbon Primary brown carbon Secondary brown carbon
ISSN号1342-937X
DOI10.1016/j.gr.2020.10.016
通讯作者Zhu, Chong-Shu(chongshu@ieecas.cn) ; Huang, Hong(honghuang@ncu.edu.cn)
英文摘要To investigate the seasonal variation of black carbon (BC) and brown carbon (BrC) light absorption at an urban site in Xi'an, China, an annual measurement was conducted by using a 7-wavelengths Aethalometer (model AE33). The results showed the aerosol absorptions were observed approximately 5-8 times greater in winter (395 Mm(-1) at 370 nm and 99 Mm(-1) at 880 nm, respectively) than those in autumn (49 Mm(-1) at 370 nm and 18 Mm(-1) at 880 nm, respectively). BC was the dominant light absorbing carbonaceous component at all wavelengths (from 370 nm to 950 nm). BrC absorption (370 nm) maximized during winter with 41% of the total aerosol absorption, and was lower in autumn (16%). The light absorption contributions of primary BrC (BrCpri) were higher than that of secondary BrC (BrCsec) in four seasons, with more than 67% of total BrC light absorption. The seasonal absorption Angstrom exponents (AAEs) of BrC, BrCpri, and BrCsec were directly derived with the highest values (3.91, 3.69, and 4.94, respectively) in wintertime. The BrCpri contributed much higher solar absorptions percentage to BC than BrCsec. The results underlined the primary emissions of urban BrCpri and BC, implying that the strategies of energy efficiency enhancement and energy structure reformation will be very important in reducing primary emissions in China. Such investigations should be conducted in other developing countries with severe air pollution. (c) 2020 Published by Elsevier B.V. on behalf of International Association for Gondwana Research.
资助项目Ministry of Science and Technology of the People's Republic of China[2017YFC0212200]
WOS研究方向Geology
语种英语
WOS记录号WOS:000617125300004
出版者ELSEVIER
资助机构Ministry of Science and Technology of the People's Republic of China
源URL[http://ir.ieecas.cn/handle/361006/16049]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Zhu, Chong-Shu; Huang, Hong
作者单位1.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
2.NanChang Univ, Sch Resource Environm & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China
3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
4.Magee Sci Corp, Berkeley, CA 94702 USA
推荐引用方式
GB/T 7714		 Zhu, Chong-Shu,Qu, Yao,Zhou, Yue,et al. High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol[J]. GONDWANA RESEARCH,2021,90:159-164.
APA Zhu, Chong-Shu.,Qu, Yao.,Zhou, Yue.,Huang, Hong.,Liu, Hui-Kun.,...&Cao, Jun-Ji.(2021).High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol.GONDWANA RESEARCH,90,159-164.
MLA Zhu, Chong-Shu,et al."High light absorption and radiative forcing contributions of primary brown carbon and black carbon to urban aerosol".GONDWANA RESEARCH 90(2021):159-164.

入库方式： OAI收割

来源：地球环境研究所

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